My item in PhD was on
https://www.amazon.com/Laser-Induced-Reflectance-Transient-Gratings-Method/dp/3659177261
This is related to theoretically and experimentally study various thin films such as Si, Ge, Al2O3 and CVD Diamond coated on different substrates. Now in Iran we are working in Materials Science: Laser Processing Materials professionally. As you see this field is able to synthesize, modify and improve materials and devices using promising methods of lasers and nanostructures.
After studying our website, if you have any question you can trust on our assistance certainly. Even we can have appropriate collaborations if needed.